Improvement in stove-pipe drums



M. P. FARNHAM.

sTovE-PIPE DRUMS. No'. 194,590, g Patented Aug. 28,1877..

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UNITED STATES PATENT CEEICE.

MOSES P. FARNHAM, OF KANAWHA, CALIFORNIA.

IMPROVEMENT IN STOVE-PIPE DRUMS.

Specification forming part of Letters Patent No. 194,590, dated August 28, 1877; application filed April 3o, 1877.

To all whom it may concern:

Be it known that I, MosEs P. FARNHAM, of Kanawha, in the county of Colusa and State of California, have invented a new and useful Improvement in Stove-Pipe Drum, of which the following is a specification:

Figure 1 is a longitudinal section of my improved drum, taken through the linea/11,l x, Fig. 2. Fig. 2 is a cross-section of the same, taken 'through the line y y, Fig. 1.

Similar letters ot' reference indicate corresponding parts.

The object of this invention is to furnish an improved drum, which shall be simple in construction, easily applied to a stove-pipe, and ei'ective in use, enabling the most ot' the heat to be withdrawn from the smoke before it is allowed to pass into the chimney, and wholly preventing sparks from passing into the chimney.

The invention will first be described in connection with the drawing, and then pointed out in the claim.

A represents a length of ordinary stovepipe, to which are attached a number of longitudinal and radial ilanges, B.

To the outer edges of the flanges B is secured a larger pipe case or drum, C, the upper and lower ends of which are closed with ringplates or heads D.

In the middle part of the pipe A is placed a snugly-tting circular damper, E, the rod F of which passes through the pipe A and drum C, as shown in Figs. l and 2.

In the pipe A, below the damper E, are formed one or more holes, al, to allow the smoke to enter the drum, and one or more holes, a2, above said damper E, to allow the smoke to pass back into the pipe A and pass on to the chimney.

With the construction shown in the drawing the flanges B upon both sides of the inletholes al pass down to the lower head D, but do not pass up to the upper head. The next ilanges B pass up to the upper head, but do not pass down to the lower head.` VBetween the ends of the flanges B that extend up to the upper head are formed the outlet-holes a2.

If desired, the flange B at one side of the inlet-holes a1 may extend from the lower to the upper head, so that the smoke can pass in only one direction, and cannot pass back to the holes through which it entered.

The auges B must be arranged to form an odd number of tlues, and there may be one, two, or more sets of flues, as may be desired.

vWith this construction the drum is designed to take the place of a length of stove-pipe, so that there is no trouble in setting it up or taking it down.

Having thus described my invention, I claim as new and desire to secure by Letters Patentrlhe combination of pipe A, having holes al a2, the two sets of radial partitions B, the endclosed drum O D, and the damper E F, all constructed and arranged substantially as and for the purpose specified. y

MOSES P. FARNHAM. Witnesses:

WILLIAM J oHNsoN, G. T. VIGKERY. 

